AI Sales Chatbot for Business Website

I need an experienced AI Automation Developer to build and integrate a sales chatbot automation into an existing business website. The website is already built. Your task is only to create, configure, test, and integrate the chatbot/automation. Main requirements: • AI chatbot embedded into the existing website • Automatically answer common customer questions • Understand the business services and pricing from provided information • Collect customer name, email, phone number, and requirements • Qualify potential leads • Identify interested / high-intent customers • Guide users toward the appropriate service • Capture leads automatically • Send collected leads to our system / CRM / webhook • Notify the business when a qualified lead is generated • Human handoff option when necessary • Conversation history/logging • Mobile and desktop friendly • Error handling and fallback responses • Fully tested before delivery Automation can use tools such as: n8n, Make, APIs, OpenAI/Claude/Gemini, webhooks, or another suitable automation stack. Important: - The existing website should not be rebuilt. - Work must integrate cleanly with the current website. - No hardcoded API keys or secrets. - The automation should be reusable and easy to maintain. - Clear documentation must be provided. - I need the complete workflow/source/configuration files after completion. - Freelancer should explain how to update chatbot knowledge/instructions later. Deliverables: 1. Fully working AI sales chatbot 2. Website integration 3. Lead capture workflow 4. Lead qualification workflow 5. Notification / CRM or webhook connection 6. Human handoff functionality 7. Testing and bug fixes 8. Source/workflow files 9. Basic setup documentation 10. Short handover walkthrough Budget: Fixed $90 USD Please apply only if you have real experience with AI chatbots, APIs, webhooks, n8n/Make, and business automation. When applying, please send: - 1–3 examples of similar work - Which tools you recommend for this project - Estimated delivery time - Confirmation that you can complete the entire project within the fixed budget